2.4 Applications
DFG48000 Fiber Switches offer high performance and modularity. They provide the flexibility of
100Mbps fiber and copper ports as well as Gigabit ports, with industry-standard LAN management
software. DFG48000 Switches are easily used in a variety of applications including MANs
(metropolitan area networks) client/server computing, secure VLAN- performance upgrades to
departmental networks, and LAN traffic centers require Gb backbone services. The performance
characteristic of the DFG48000 Switches enables them to inter-connect a series of subnets (one
subnet per DFG48000 Switch port) in a LAN traffic center. The subnet connections may be via fiber
or twisted pair cabling, 100Mbps or 10 Mbps speed, and full-or half-duplex mode. The mixed-media
capability is ideal for upgrading existing Ethernet LAN networks where existing cabling must be
accommodated. The fiber-built-in media capability is ideal for integrating future-proof fiber cabling
into the LAN structure.
Example 1: DFG48000 Switch for a VLAN application
Equipped with lots of useful features, the DFG48000 Managed switch is able to handle a VLAN
application and provide a security and performance in an Ethernet network center. A secure VLAN-
enabled network is simply an administratively configured broadcast domain. The network
administrator determines which ports and nodes are in which broadcast domains by setting
membership profiles for each of them. The DFG48000’s VLAN capability can be developed in several
types of Virtual LANs, such as Port-based VLANs, or Tag-based VLANs. In an office environment
where departments such as Finance, Engineering, R&D, and Marketing need to keep a secure LAN,
the DFG48000’s VLAN feature will prevent traffic cross-over among domains, and thus from keep
sensitive data and information controlled. The Managed DFG48000 equipped with VLANs capability
is ideal for any application where a secure VLAN to multiple departments is needed. The modularity
of the DFG48000 Managed Fiber Switch makes it an attractive choice for use in applications with
LAN connections to an organization’s multiple site offices. The different offices can be easily
connected together with the Fiber ports supported by the DFG48000 Switch. A main NT-server in a
secure area protected from earthquake or fire hazards can be connected to the full duplex Gigabit
Fiber port. Full-duplex future proof fiber media can easily connect long distance subnets and provide
a stable secure network to all applications. The SNMP management capability of the DFG48000
Switch helps create a database of all the network subnets to easily manage the network.
Example 2:
DFG48000 in
Ethernet Backbone
In another application, a managed switch is needed to provide an Ethernet backbone for a
diversified network with multiple subnets. The back bone consists of high speed LAN segments
supported by 100Mbps full-duplex future-proof fiber media to provide secure long distance LAN
connections. The entire network is sharing a higher bandwidth Gigabit-enabled data-mining server
for the vital database located in a separate secured building. The copper ports are required for
multiple subnets inside the building. The entire spread network will be manageable to provide easy,
detectable, uninterrupted support through a viewable SNMP monitor. The DFG48000 Managed Fiber
Switch equipped with the mix of copper and fiber ports provides an economical and seamless
solution to the requirements. The user-configurable DFG48000 provides an extra boost to the
network requirements by providing copper/fiber media along with the higher bandwidth support of
10/100 and 1000Mb. The user can utilize the SNMP feature equipped with VLAN, RMON, SNTP and
other standard managed LAN features to provide a secure and stable network.
The DFG48000 Managed Fiber Switch with mixed-media flexibility allows the users more than one
configuration alternative. The user has an advantage by fulfilling the present requirements as well
as benefiting from the multiple choices of modules to support future expansion as the network
evolves. The Gigabit port option boosts the bandwidth for high speed to support the peak traffic and
minimize congestion.